Motoyama Yuri L, Joel Gustavo B, Pereira Paulo E A, Esteves Gilmar J, Azevedo Paulo H S M
Group of Studies and Research in Exercise Physiology (GEPEFEX), Federal University of São Paulo, São Paulo 11.015-020, Brazil.
Institute of Physical Activity Sciences and Sport, Cruzeiro do Sul University, São Paulo 03.342-000, Brazil.
Sports (Basel). 2016 Sep 23;4(4):46. doi: 10.3390/sports4040046.
The aim of this study was to compare the number of repetitions to volitional failure, the blood lactate concentration, and the perceived exertion to resistance training with and without an airflow-restricting mask.
Eight participants participated in a randomized, counterbalanced, crossover study. Participants were assigned to an airflow-restricting mask group (MASK) or a control group (CONT) and completed five sets of chest presses and parallel squats until failure at 75% one-repetition-maximum test (1RM) with 60 s of rest between sets. Ratings of perceived exertion (RPEs), blood lactate concentrations (Lac), and total repetitions were taken after the training session.
MASK total repetitions were lower than those of the CONT, and (Lac) and MASK RPEs were higher than those of the CONT in both exercises.
We conclude that an airflow-restricting mask in combination with resistance training increase perceptions of exertion and decrease muscular performance and lactate concentrations when compared to resistance training without this accessory. This evidence shows that the airflow-restricting mask may change the central nervous system and stop the exercise beforehand to prevent some biological damage.
本研究的目的是比较使用和不使用气流限制面罩进行抗阻训练时达到意志性疲劳的重复次数、血乳酸浓度和主观用力感觉。
八名参与者参加了一项随机、平衡、交叉研究。参与者被分配到气流限制面罩组（MASK）或对照组（CONT），完成五组卧推和平行深蹲，直至在75%的一次重复最大值测试（1RM）时达到疲劳，组间休息60秒。训练结束后记录主观用力感觉（RPE）评分、血乳酸浓度（Lac）和总重复次数。
在两项练习中，MASK组的总重复次数均低于CONT组，且MASK组的（Lac）和RPE高于CONT组。
我们得出结论，与不使用该辅助设备的抗阻训练相比，气流限制面罩与抗阻训练相结合会增加用力感觉，降低肌肉表现和乳酸浓度。这一证据表明，气流限制面罩可能会改变中枢神经系统，并提前终止运动以防止一些生物损伤。
